Last month's transport select committee report was heavily critical of the 'netting off' scheme, echoing the views of ICE president Mark Whitby and transport lobbyist Slower Speeds Initiative.
'The rules about the visibility and location of cameras are unreasonable, the report said.
'Crashes do not just occur at accident black spots. Police and local authorities should decide where to locate cameras and whether they should be visible.'
The committee was particularly concerned that the decision to order cameras to be made highly visible was based on no 'scientific calculation' to see whether covert or overt cameras were more effective.
The (then) Department for Transport Local Government and the Regions justified the decision on the grounds that overt cameras are more likely to modify drivers' behaviour, and that it is important to retain public support.